Won't boot. Cap Num Scroll Lock on.

Hi,

I Have an Inspiron 1520, 2gb ram, 8400M GS

I installed a webcam driver and tried to reboot.
Num-lock Scroll-Lock Caps-Lock on not flashing. No beeps. No dell logo. After 5 secs, it restarts. I don't have a battery. The power indicator is on. My AC adapter light is also on.

What I've tried so far:
Removed both 512 ram 1 at a time and still the same results. Tried other ram.
Unplugged and plugged back in the CMOS battery.
The battery works on another laptop.
Removed WLan card.

So does this confirm that the mobo is indeed dead?